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/* This file originally comes from Qt Tetrix example code.  I don't claim this
 * as my own work.  I mearly modified it to meet the project specifications */

#ifndef TETRIXPIECE_H
#define TETRIXPIECE_H

/// Represents a tetrix piece
class TetrixPiece
{
public:
    TetrixPiece() { setShape(0, 4); }

    /// Sets the shape of the piece
    /*!
     * @param shape coordinates of the blocks in the piece
     * @param numBlocks number of blocks in the piece
     */
    void setShape(const int *shape, int numBlocks);

    /// Gets the x coordinate of a block in the piece
    /*!
     * @param index block to get the x coordinate from
     * @return the x coordinate of the block
     */
    int x(int index) const { return coords[index][0]; }
    /// Gets the y coordinate of a block in the piece
    /*!
     * @param index block to get the y coordinate from
     * @return the y coordinate of the block
     */
    int y(int index) const { return coords[index][1]; }
    /// Gets the lowest x coordinate of all blocks in the piece
    int minX() const;
    /// Gets the highest x coordinate of all blocks in the piece
    int maxX() const;
    /// Gets the lowest y coordinate of all blocks in the piece
    int minY() const;
    /// Gets the highest y coordinate of all blocks in the piece
    int maxY() const;
    /// Gets the number of blocks in the piece
    int numBlocks() const { return nBlocks; }
    /// Rotate the piece counter-clockwise 90 degrees
    TetrixPiece rotatedLeft() const;
    /// Rotate the piece clockwise 90 degrees
    TetrixPiece rotatedRight() const;

private:
    void setX(int index, int x) { coords[index][0] = x; }
    void setY(int index, int y) { coords[index][1] = y; }

    int nBlocks;
    int coords[7][2];
};

#endif
